Why we use Javascript in CRM ?

• Data Manipulation on the forms
• Automation and usability for users
• Custom Validations on the forms about processes
• Process Enhancement and Enforcement
• To Create, Update and Retrieve record on the Client Side using OData

Get the value from field

Xrm.Page.getAttribute("fieldname").getValue();

Set the value of a field

Xrm.Page.getAttribute("fieldname").setValue(value);

Set the value of a disabled field (Read-Only)

Xrm.Page.getAttribute("fieldname").setSubmitMode("always");
Xrm.Page.getAttribute("fieldname").setValue(value);

Set the Requirement level

Xrm.Page.getAttribute("fieldname").setRequiredLevel("none");
Xrm.Page.getAttribute("fieldname").setRequiredLevel("required");
Xrm.Page.getAttribute("fieldname").setRequiredLevel("recommended");

Get Form Type

//Create : 1, Update : 2, Read-Only : 3,
//Disabled : 4, QuickCreate : 5, BulkEdit : 6 
var formType = Xrm.Page.ui.getFormType();

Set the value of a lookup field

function setLookupValue (fieldname, id, name, entityType){
     var lookupValue = new Array();
     lookupValue[0] = new Object();
     lookupValue[0].name = name;
     lookupValue[0].entityType = entityType;
     lookupValue[0].id = id;
     Xrm.Page.getAttribute("fieldname").setValue(lookupValue);
}

Hide / Show a field

Xrm.Page.getControl("fieldname").setVisible(false);

Hide / Show a Tab

Xrm.Page.ui.tabs.get(tabName).setVisible(visible);

Save the form & Save and Close the from

Xrm.Page.data.entity.save()
Xrm.Page.data.entity.save("saveandclose")

Determine whick fields on the form are dirty

var attributes = Xrm.Page.data.entity.attributes.get();
for (var i in attributes){
    var attribute = attributes[i];
    if(attribute.getIsDirty())
       alert(attribute.getName() + " is dirty");
}

Get ID / Guid of the current record

Xrm.Page.data.entity.getId();

Get ID / Guid of the current user

Xrm.Page.context.getUserId();

Get the Security Roles of the current user

var roles = Xrm.Page.context.getUserRoles();

Get the CRM Server URL

Xrm.Page.context.getServerUrl();

Refresh a SubGrid

Xrm.Page.ui.controls.get("target").refresh();

Change the default entity in the lookup window 

function changeDefaultLookup(){
   document.getElementById("fieldname").setAttribute("defaulttype","2");
   var ViewId = "BBD2S5C5-53E3-4C69-ADDD-802327E67A0D";
   Xrm.Page.getControl("fieldname").setDefaultView(viewId);
}

Popup an existing CRM Record

Xrm.Utility.openEntityForm("entityname",recordId);
//or
//Set features for how the window will appear
var feature = "location=no,menubar=no,status=no,toolbar=no";
// Get the CRM Server URL
window.open(serverUrl + '/main.aspx?etnENTITYNAME&pagetype=entityrecord&id= ' + encodeURIComponent(ENTITYID), '_blank', features, false);

Popup a new CRM form ( blank form)

Xrm.Utility.openEntityForm("entityname")

Popup a new CRM form with default values

var parameters = {
    new_name : "Customer Name",
    customerid : contactId,
    customeridname : contactName,
    customeridtype : "contact"
}
Xrm.Utility.openEntityForm("entityname",null,parameters);

Popup / Trigger the lookup window associated to a lookup field

window.document.getElementById('fieldname').click()

Popup an OK / Cancel Dialog ( Alert )

if (confirm("Are you sure ? ")){
  // OK is selected
}
else{
 // Cancel is selected
}

Refresh the Ribbon

Xrm.Page.ui.refreshRibbon()

Disable the all fields in the form

Xrm.Page.ui.controls.forEach (function (control, index){
   control.setDisabled(true);
}

Expand / Collapse a Tab

Xrm.Page.ui.tabs.get("tabname").setDisplayState(true)

Get all Required Fields in CRM form

function getRequiredFields(){
  var arr = [];
  Xrm.Page.data.entity.attributes.forEach (function (attribute, index){
      if (attribute.getRequiredLevel() == "required"){
          arr.push(attribute);
      }
  });
  return arr;
}

Set / Change Label of field in CRM form

Xrm.Page.ui.controls.get("fieldname").setLabel("example");

Reload / Refresh a form in CRM

window.location.reload(true);

Convert to Upper String Value

value.toUpperCase()

Change CRM Field CSS Style (font, color etc.)

document.getElementById(fieldname + "_c").style.font = fontstyle;
document.getElementById(fieldname + "_c").style.color = colorname;

Set as Read Only

Xrm.Page.ui.controls.get("fieldname").setDisabled(true);

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